C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/112, 252/1.D
C10G 11/18 (2006.01) B01J 8/00 (2006.01) B01J 21/20 (2006.01)
Patent
CA 1151578
ABSTRACT OF THE DISCLOSURE A conveyance system in Fig. 1 for removing parti- culate catalyst from the fluidized bed of a regenerator vessel 5 with a downwardly directed discharge conduit 9 which leads from the lower portion of said vessel and is connected at its lower end to a vertical, refractory lined pipe 17, which is aligned with a fluidization means for conveying particulate catalyst through said refractory lined pipe. The discharge conduit is of a relatively large diameter in order to prevent catalyst plugging of the conveyance system. A gate valve located within this conduit is used to close the conveyance system during shutdown of said system. Control of catalyst flow is performed by the fluidization means aligned with the vertical refractory lined pipe, while the pressure level of the system is maintained by the reduced internal diameter of the pipe created by the refractory lining 19. The refractory lined pipe is connected at its downstream end to appropriate conduits which transport the catalyst to a spent catalyst hopper 27 for recirculation to the hydrocarbon reactor.
367675
Luckenbach Edward C.
Worley Arthur C.
Exxon Research And Engineering Company
Swabey Ogilvy Renault
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